MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a link farm and a direct link to a malicious redirector, disguised as a solution manual. The primary heuristic indicates the PDF links to known malicious redirector infrastructure. The document body contains the URL https://ttraff.cc/pify?keyword=solucionario+ecuaciones+diferenciales+nagle+4+edicion+pdf, which is likely used to redirect the user to a malicious site. Several other unknown URLs were also extracted.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.cc/pify?keyword=solucionario+ecuaciones+diferenciales+nagle+4+edicion+pdf In PDF document text
- http://files.sabelrentals.com/uploads/1/3/1/4/131454151/2c50888d52d038.pdfIn PDF document text
- http://bezelofa.backnbalance.org/uploads/1/3/2/6/132682883/tawezenubo.pdfIn PDF document text
- http://files.germane2germaine.com/uploads/1/3/1/4/131454521/mufomekivawugu_gesobos_gebafuporewod.pdfIn PDF document text
- http://temaba.bodyworkbybarb.com/uploads/1/3/1/8/131856772/ruledibifuxurupuga.pdfIn PDF document text
- http://duwefefe.templemedsga.com/uploads/1/3/0/8/130873947/xepipokasuzudiv.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0429/7529/7689/files/answer_and_counter_petition_for_paternity.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8609/4241/files/nijepufunonel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6221/3270/files/oxford_dictionary_english_to_odia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3237/0584/files/chocapic13_shaders_1._8._9.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8815/0690/files/kobemolenavuvobiwom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7667/1895/files/penatalaksanaan_bronkitis_akut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/46005106453.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9320/5916/files/magumemamenatex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7608/4117/files/gupezolinupesotebew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9690/7684/files/99613488237.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006b1f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B1F | 5316 bytes |
SHA-256: 0dec8f127fb49dc5d7b0f79478daac48f8951f73ca4afcb598284b8ede9d88ab |
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font_01_sfnt_off00007d32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D32 | 10792 bytes |
SHA-256: 3cbb2d7723331b4d08c66e1f4055e727ec9294b02430cb671048a8fff61698bc |
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font_02_sfnt_off0000a099.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA099 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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